May 2012
Intermediate to advanced
679 pages
16h 56m
English
Content preview from Object Oriented Programming with C++, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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3.14 COMMAND LINE ARGUMENTS
These days we run our programs from integrated development environments like TurboC++. They offer us various services. However, when we have a program in machine language form (.exe) file, we execute it from command line of our operating system (DOS, Windows, Linux, etc.) At that time, we can pass parameters to our programs. These parameters are termed as command line arguments. The C++ language has reserved keywords argc and argv for use in this situation. Variable argc stores the number of arguments passed. Variable argv is an array of strings. It stores the arguments as a string. Suppose we have a program cla1.exe, we can run it as:
Command Prompt> cla1 good morning <enter>
In this case, “good” and “morning” are ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.